Electric-lamp connector.



E. A. POHL.

ELECTRIC LAMP CONNECTOR. APPLICATION FILED FEB. 4. i916.

Patented Fe 20, 1 17';

. q vammw R S A-YPQHL GEQRGETWK J 'E Ee'rRIc-LAM'P continence.

Application filed February 4, 1916. Serial'Noa7Q 192 To all whom it may concern:

Be it known that I, ERNEST A. lonL,-a citizen of the United States, resldmg at Georgetown, in the county of Brown and State ot' ()hio, have invented certain new and usel'ul Improvements in .lllectrrc-Lamp Connectors; and I do hereby declare the fol-' lowing to be a full, clear, and exact deserip tron of the invention, such as will enable others skilled in the art to which it ZIPPGI tains to make and use the same.

This invention relates to electric lamp connectors and more particularly to a plug particularly designed for insertion in the electric lamp socket of an electric headlight of an automobile for electrically connecting said lamp with a. lamp circuit.

The invention has for its primary object to provide a plug in which one of the contacts thereof is connected with the ground wire of the magneto or other source of electro motive force through the lamp body, bracket and vehicle frame thereby eliminating one of the two wires ordinarily provided for connecting the headlights of antomobiles with the generator.

Another object is to so arrange the securing pin for the plug that it is electrically connected with the body of the lampp lViththese and other objects in view the invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the claim hereto appended, it being understood that various changes in the form,

proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Figure 1 represents a fragmental sectional view through the headlight of a motor vehicle, illustrating the improved plug applied to use and connected with an electric liglt circuit,

Fig. 2 represents. a side elevation, partly in section, of the improved plug,

Fig. 3 represents a longitudinal sectional view on the line 33 of Fig. 2, and

' Fig. 4. represents a perspective view of the securing pin and contacts removed.

Referring to the drawing in detail, wherein similar reference numerals dcsignatecorresponding parts throughout the several views, the numeral 5Yindicates the body of h 3 Specification of Letters Patent. i

.- intermediate one .tion of the body the plug. which is" formed oi insulatingimaterlal and 1S 1 )l'()-\"ltl0(l centrallywithaa fstop flange 6. The portion ottheplugbody 5 fendthereof-and the flange (5 is formed of external screw-tlnteads 7 to receive a hollow capS ha vingacentral aperture therein; to receive anyelectrie-wire or conductor. g t The opposite end of the plug body 5 is adapted for insertion in a lamp socket 9 and is provided with a pair of spaced contacts 1 and 11, the contact 11 being electrically connected with the angular shank 12 extending longitudinally through the plug bod 5 and forming part of a wire receiving soc (6t 13 protruding from the threaded end 7 of the plug body and having an internal recess 14 of adequate size to receive the terminal of an electric wire. The tl'n'eaded extremity 7 of the plug body is formed with atransverse recess 15 extending inwardly to the socket 13 and receiving the head, 16 of a securing screw 17 which latter is threaded in the'wall of the socket 13 and designed to rigidly clamp the terminal of an electric wire therein.

The other contact 10 of the plug is electrically connected,with a curved lateral extension 18 of,an anchoring pin 19 which latter is embeddeddiametrically within the plug body?) and the opposite ends of which protrude from the plug.

In use, the end of the plug body 5 is inserted in the rear extremity of the lamp socket 9 secured in the headlight 20 of a motor vehicle, the exposed ends of the anchoring pin 19 being moved longitudinally within the bayonet slots 21. formed in the end of the socket 9. Subsequent to inser- 5 the latter is rotated so as to engage the ends of the pin' 19 in the angular rear extremities of the bayonet slots 21 and thus reliably anchor the plug body 5 in position in the socket 9 The anchoring pin 19 engaging the metallic shell of the socket 9 forms an electrical connection therewith 'and is connected through the shell of the socket 9, the lamp body 20, lamp bracket 22 and vehicle body 23 with the ground wire 24. of a generator or otl'iei-si'litable source of electromotor force 25. The contact 11 ot' the plug is connected by the shank 12, socket 13, and wire 26 with the other-pole otthe' generator 25. Thecontacts'lO and 11 engage the usual spring contacts arranged within the socket 9 through which the electric current is conducted to the electric lamn 27 embedded in the front end of the socket 9. From the foregoing, it is evident that one of the contacts 11 of the'glug is connected directly with one pole o by electrically connecting the lamp 27 with the generator.

What I claim -is:-

In an electric lamp connector, a plug including a body, a socket secured in one end of said plug, means for securing a wire in said socket, an electrical contact secured in the. opposite end of said body, an angular shank electrically connecting said socket with said contact, a second contact, an anchoring pin arranged diametrically within said plug and projecting laterally of the latter and a lateral extension on said pin electrically connected with the second mentioned contact.

In testimony whereof'l afiix my signature in presence of two Witnesses.

ERNEST A. POHL.

Witnesses:

IVY Point, FRANK X. Francis. 

